DOSBOX location control from PBWIN

[BOB MECHLER]

Some of our customers have Dos custom programs that they have not seen fit to upgrade to PBWIN. We are implementing sticky window positioning so that when a dialog is move to a second screen or any position other than center screen, the next PBWIN program called from a menu will appear in the same position. Also while that program is open any popup program that returns values to the underlying maintenance screen will center itself in the larger parent screen. I'm not use MDI but have gotten all the screens in PBWin to work this way by capturing the Windows position with WM_MOVE and then passing it to the next program called. If the target program has a smaller footprint, I do a little math and center the top left so that it will be centered in the calling program.
The Dos programs that are called from a custom menu, I don't know how to control their position from a PBwin program. If only Dos programs are running they retain their position in a multiple monitor scenario on their own.

A long explanation to ask this question. If I shell to a dos window from a PBwin program, how do I center that dos window over the program that shelled to it?

BOB MECHLER

[Michael Mattias]

... If I shell to a dos window from a PBwin program, how do I center that dos window over the program that shelled to it?

If you shell the DOS program with by means of the CreateProcess WinAPI function, I think you can specify the starting position and size of the command prompt in the STARTUPINFO structure.

I know this works for "GUI" child processes, but I'm not sure it works for console processes, or if CMD.EXE actually obeys when it is the child.

[Eric Pearson]

Bob --

It's possible that my company's "DOSBox Tools" product would solve your problems...

-- Eric Pearson

[BOB MECHLER]

Eric,

I've downloaded the shareware version of DosBox and will evaluate.

We are starting to heavily use SQL Tools professional and find it an excellent, excellent tool that will allow us to move to SQL with our procedural style programs.

Thanks,

Bob Mechler

[Pierre Bellisle]

Center SHELLed dialog, multi monitor aware

Bob,

You may also try the following...

Pierre

#COMPILE EXE '#Win 8.03#
#DIM ALL
#INCLUDE "Win32Api.inc" '#2005-01-27#
 
GLOBAL hDlg   AS DWORD
GLOBAL hShell AS DWORD
 
%ButtonShell  = 101
%Label1       = 201
%Label2       = 202
'______________________________________________________________________________
 
FUNCTION EnumWindowProc(BYVAL hTry AS LONG, BYVAL ProcessId AS DWORD) AS LONG
 LOCAL zCaption     AS ASCIIZ * %Max_Path
 LOCAL zClass       AS ASCIIZ * %Max_Path
 LOCAL LenClass     AS LONG
 LOCAL LenCaption   AS LONG
 LOCAL ProcessIdTry AS DWORD
 
 hShell = 0
 
 'LenCaption = GetWindowText(hTry, zCaption, %MAX_PATH) 'Get the caption of the dialog
 'IF UCASE$(zCaption) = "MYCAPTION" THEN
 '  hShell = hTry
 'ELSE
 '  FUNCTION = %TRUE
 'END IF
 
 'LenClass = GetClassName(hTry, zClass, %MAX_PATH) 'Get the class of the dialog
 'IF UCASE$(zClass) = "MYCLASS" THEN
 '  hShell = hTry
 'ELSE
 '  FUNCTION = %TRUE
 'END IF
 
 GetWindowThreadProcessId hTry, ProcessIdTry 'Get ProcessId of try window
 IF ProcessId = ProcessIdTry THEN 'Found our process id ?
   hShell = hTry
 ELSE
   FUNCTION = %TRUE 'True, so Function will recall itself until last window found
 END IF
 
 
END FUNCTION
'______________________________________________________________________________
 
CALLBACK FUNCTION DlgProc
 LOCAL ProcessId    AS DWORD
 LOCAL Looper       AS LONG
 LOCAL DesktopRect  AS RECT
 LOCAL MainRect     AS RECT
 LOCAL ShellRect    AS RECT
 LOCAL ShellSizeX   AS LONG
 LOCAL ShellSizeY   AS LONG
 LOCAL hMonitor     AS DWORD
 LOCAL MonitorData  AS MONITORINFOEX
 LOCAL sBuffer      AS STRING
 
 SELECT CASE CBMSG
 
   CASE %WM_INITDIALOG
 
   CASE %WM_COMMAND
     SELECT CASE LOWRD(CBWPARAM)
       CASE %ButtonShell
         IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
           ProcessId = SHELL(HANDLES, "Notepad.exe", %SW_HIDE) 'Change to valid stuff...
           'Since it will take some time for Windows to create the SHELLed dialog,
           'the use of this FOR/NEXT loop will wait up to 10 seconds.
           FOR Looper = 1 TO 100 'Try for 10 seconds (100 * 0.1 second)
             EnumWindows CODEPTR(EnumWindowProc), ProcessId
             IF hShell THEN EXIT FOR
             SLEEP 100 'Give Windows time to create dialog, 0.1 second delay
           NEXT
 
           IF hShell THEN
             'SystemParametersInfo could be used on single monitor system
             'SystemParametersInfo %SPI_GETWORKAREA, 0, BYVAL VARPTR(DesktopRect), 0 'Get desktop size
 
             'Multi monitor...
             'Get handle of the monitor where our dialog is
 
             hMonitor = MonitorFromWindow(BYVAL hDlg, BYVAL %MONITOR_DEFAULTTONEAREST) '%MONITOR_DEFAULTTOPRIMARY %MONITOR_DEFAULTTONEAREST
             sBuffer = "Monitor handle is" & STR$(hMonitor)
             'Get monitor info
             MonitorData.cbSize = SIZEOF(MonitorData) 'Ask for MONITORINFOEX
             GetMonitorInfo BYVAL hMonitor, BYVAL VARPTR(MonitorData)
             IF MonitorData.dwFlags = %MONITORINFOF_PRIMARY THEN
               sBuffer = sBuffer & ", it is the primary monitor"
             ELSE
               sBuffer = sBuffer & ", it is the secondary monitor"
             END IF
             sBuffer = sBuffer & $CRLF & "Device name is " & MonitorData.szDevice
             CONTROL SET TEXT CBHNDL, %Label1, sBuffer
             sBuffer = "Size is - " & _
                       "Left:" & STR$(MonitorData.rcWork.nLeft)    & _
                       ", Top:" & STR$(MonitorData.rcWork.nTop)   & _
                       ", Right:" & STR$(MonitorData.rcWork.nRight) & _
                       ", Bottom:" & STR$(MonitorData.rcWork.nBottom)
             CONTROL SET TEXT CBHNDL, %Label2, sBuffer
 
             DesktopRect = MonitorData.rcWork
 
             GetWindowRect hDlg, MainRect 'Get main dialog position and size
             GetWindowRect hShell, ShellRect 'Get shelled dialog position and size
 
             'Calculate new shelled dialog position...
             ShellSizeX = ShellRect.nRight - ShellRect.nLeft
             ShellRect.nLeft =(MainRect.nLeft + (MainRect.nRight - MainRect.nLeft) / 2) - _
                              (ShellSizeX / 2)
             ShellRect.nRight = ShellRect.nLeft + ShellSizeX
 
             ShellSizeY = ShellRect.nBottom - ShellRect.nTop
             ShellRect.nTop =(MainRect.nTop + (MainRect.nBottom - MainRect.nTop) / 2) - _
                             (ShellSizeY / 2)
             ShellRect.nBottom = ShellRect.nTop + ShellSizeY
 
             'Make sure right side of dialog is visible...
             IF ShellRect.nRight > DesktopRect.nRight THEN
               ShellRect.nLeft = DesktopRect.nRight - (ShellRect.nRight - ShellRect.nLeft)
               ShellRect.nRight = ShellRect.nLeft + ShellSizeX
             END IF
             'Make sure bottom side of dialog is visible...
             IF ShellRect.nBottom > DesktopRect.nBottom THEN
               ShellRect.nTop = DesktopRect.nBottom - (ShellRect.nBottom - ShellRect.nTop)
               ShellRect.nBottom = ShellRect.nTop + ShellSizeY
             END IF
             'Make sure left side of dialog is visible...
             IF ShellRect.nLeft < DesktopRect.nLeft THEN
               ShellRect.nLeft = DesktopRect.nLeft               
               ShellRect.nRight = ShellSizeX
             END IF
             'Make sure top side of dialog is visible...
             IF ShellRect.nTop < DesktopRect.nTop THEN             
               ShellRect.nTop = DesktopRect.nTop               
               ShellRect.nBottom = ShellSizeY
             END IF
 
             'Set new shelled dialog position
             SetWindowPos hShell, %HWND_TOP, ShellRect.nLeft, ShellRect.nTop, 0, 0, _ 'ShellSizeX, ShellSizeY, _
                          %SWP_NOSIZE OR %SWP_NOZORDER OR %SWP_SHOWWINDOW
 
             ShowWindow hShell, %SW_SHOWNORMAL
 
           END IF
         END IF
     END SELECT
 
  END SELECT
 
END FUNCTION
'______________________________________________________________________________
 
FUNCTION PBMAIN()
 
 DIALOG NEW %HWND_DESKTOP ,"Center shelled program", , , 200, 100, _
            %WS_CAPTION OR %WS_MINIMIZEBOX OR %WS_SYSMENU, %NULL TO hDlg
 
 SetClassLong hDlg, %GCL_HICON, LoadIcon(BYVAL %NULL, BYVAL %IDI_INFORMATION)
 
 CONTROL ADD LABEL, hDlg, %Label1, "Center shelled program.", 10, 10, 180, 18
 CONTROL ADD LABEL, hDlg, %Label2, "Single and multi monitor version.", 10, 30, 180, 18
 
 CONTROL ADD BUTTON, hDlg, %ButtonShell, "Shell program", 70, 50, 60, 20
 
 DIALOG SHOW MODAL hDlg CALL DlgProc
 
END FUNCTION
'______________________________________________________________________________

[BOB MECHLER]

Pierre,

Works fine with a single display but hugs right corner of monitor 1 if I move
the program to the second monitor. Looks promising though. I'll play with the return values of the dialog position and see what I can do.

Bob Mechler

[Pierre Bellisle]

Code updated for multi monitor

Bob,

If you feel like cheating,
I updated above code to work in a multi monitors environnement...

Pierre

[Pierre Bellisle]

Create a centered dialog on second monitor

Also,

For the fun of it, following code will create a dialog that will
start centered on the second monitor, if any.

Pierre

#COMPILE EXE '#Win 8.03#
#DIM ALL
#INCLUDE "Win32Api.inc" '#2005-01-27#
 
%Label1       = 201
 
GLOBAL hDlg AS DWORD
 
%DISPLAY_DEVICE_MODESPRUNED = &h8000000
%DISPLAY_DEVICE_REMOVABLE   = &h20
 
TYPE MonitorInfoAddr
  ArrayAddress AS DWORD
  MonitorCount AS DWORD
END TYPE
 
TYPE MonitorInfoData
  hMonitor   AS DWORD
  hdcMonitor AS DWORD
  Clip       AS RECT
END TYPE
 
TYPE DISPLAY_DEVICE_EX 'Old DISPLAY_DEVICE in Win32api
  cb           AS DWORD
  DeviceName   AS ASCIIZ * 32
  DeviceString AS ASCIIZ * 128
  StateFlags   AS DWORD
  DeviceID     AS ASCIIZ * 128
  DeviceKey    AS ASCIIZ * 128
END TYPE
'______________________________________________________________________________
 
FUNCTION MonInfoEnumProc(BYVAL hMonitor AS DWORD, BYVAL hdcMonitor AS DWORD, _
                         BYREF Clip AS RECT, BYVAL dwData AS DWORD) AS LONG
 LOCAL  pMonitorDataAddr AS MonitorInfoAddr POINTER
 LOCAL  Looper           AS LONG
 STATIC LastMonitor      AS DWORD
 
 REDIM PRESERVE MonitorData(0 TO LastMonitor) AS STATIC MonitorInfoData
 
 'This FOR/NEXT is needed to reset data only if EnumDisplayMonitors is called more than once
 FOR Looper = 0 TO LastMonitor
   IF MonitorData(Looper).hMonitor = hMonitor THEN
     LastMonitor = 0
     REDIM PRESERVE MonitorData(0 TO LastMonitor) AS STATIC MonitorInfoData
     EXIT FOR
   END IF
 NEXT
 
 MonitorData(LastMonitor).hMonitor = hMonitor
 MonitorData(LastMonitor).hdcMonitor = hdcMonitor
 MonitorData(LastMonitor).Clip = Clip
 
 pMonitorDataAddr = dwData
 @pMonitorDataAddr.MonitorCount = LastMonitor + 1
 @pMonitorDataAddr.ArrayAddress = VARPTR(MonitorData(0))
 
 INCR LastMonitor
 
 FUNCTION = %TRUE
 
END FUNCTION
'______________________________________________________________________________
 
CALLBACK FUNCTION DlgProc
END FUNCTION
'______________________________________________________________________________
 
FUNCTION PBMAIN()
 LOCAL MonitorDataAddr  AS MonitorInfoAddr
 LOCAL MonitorData      AS MONITORINFOEX
 LOCAL DisplayDevice    AS DISPLAY_DEVICE_EX
 LOCAL SecondaryMonitor AS LONG
 LOCAL Looper           AS LONG
 LOCAL Buffer           AS STRING
 LOCAL MainRect         AS RECT
 LOCAL MainSizeX        AS LONG
 LOCAL MainSizeY        AS LONG
 
 EnumDisplayMonitors(BYVAL %NULL, BYVAL %NULL, BYVAL CODEPTR(MonInfoEnumProc), VARPTR(MonitorDataAddr))
 
 DIM MonitorData(0 TO MonitorDataAddr.MonitorCount - 1) AS MonitorInfoData AT MonitorDataAddr.ArrayAddress
 Buffer = ""
 FOR Looper = 0 TO MonitorDataAddr.MonitorCount - 1
   Buffer = Buffer & _
   "Monitor " & STR$(Looper)                                    & $CRLF & _
   "Monitor handle is" & STR$(MonitorData(Looper).hMonitor)     & $CRLF & _
   "Monitor hdc is"    & STR$(MonitorData(Looper).hdcMonitor)   & $CRLF & _
   "Left:"             & STR$(MonitorData(Looper).Clip.nLeft)   & $CRLF & _
   "Top:"              & STR$(MonitorData(Looper).Clip.nTop)    & $CRLF & _
   "Right:"            & STR$(MonitorData(Looper).Clip.nRight)  & $CRLF & _
   "Bottom:"           & STR$(MonitorData(Looper).Clip.nBottom) & $CRLF & $CRLF
 NEXT
 
 FOR Looper = 0 TO MonitorDataAddr.MonitorCount - 1
   MonitorData.cbSize = SIZEOF(MonitorData) 'Ask for MONITORINFOEX
   GetMonitorInfo BYVAL MonitorData(Looper).hMonitor, BYVAL VARPTR(MonitorData)
   IF (MonitorData.dwFlags AND %MONITORINFOF_PRIMARY) = 0 THEN
     SecondaryMonitor = Looper
     EXIT FOR
   END IF
 NEXT
 
 DIALOG NEW %HWND_DESKTOP ,"Centered on secondary monitor !", , , 210, 150, _  '200 150
            %WS_CAPTION OR %WS_MINIMIZEBOX OR %WS_SYSMENU, %NULL TO hDlg
 
 SetClassLong hDlg, %GCL_HICON, LoadIcon(BYVAL %NULL, BYVAL %IDI_INFORMATION)
 
 CONTROL ADD LABEL, hDlg, %Label1, Buffer, 15, 10, 170, 130
 
 IF MonitorDataAddr.MonitorCount = 2 THEN
   GetWindowRect hDlg, MainRect 'Get dialog position and size
 
   MainSizeX = MainRect.nRight - MainRect.nLeft
   MainRect.nLeft = MonitorData(SecondaryMonitor).Clip.nLeft + _
                    ((MonitorData(SecondaryMonitor).Clip.nRight - _
                    MonitorData(SecondaryMonitor).Clip.nLeft) / 2) - _
                    MainSizeX / 2
   MainRect.nRight = MainRect.nLeft + MainSizeX
 
   MainSizeY = MainRect.nBottom - MainRect.nTop
   MainRect.nTop = MonitorData(SecondaryMonitor).Clip.nTop + _
                   ((MonitorData(SecondaryMonitor).Clip.nBottom - _
                   MonitorData(SecondaryMonitor).Clip.nTop) / 2) - _
                   MainSizeY / 2
   MainRect.nBottom = MainRect.nTop + MainSizeY
 
   SetWindowPos hDlg, %HWND_TOP, MainRect.nLeft, MainRect.nTop, 0, 0, _
                %SWP_NOSIZE OR %SWP_NOZORDER OR %SWP_SHOWWINDOW
 END IF
 
 DIALOG SHOW MODAL hDlg CALL DlgProc
 
 '--------------------------------------------------------------------- EnumDisplayDevices
 
 Buffer = ""
 FOR Looper = 0 TO MonitorDataAddr.MonitorCount - 1
   DisplayDevice.cb = SIZEOF(DisplayDevice)
   EnumDisplayDevices(BYVAL %NULL, Looper, BYVAL VARPTR(DisplayDevice), BYVAL %NULL) 'Nonzero if succees
   Buffer = Buffer & _
   "DeviceName: "   & DisplayDevice.DeviceName       & $CRLF & _
   "DeviceString: " & DisplayDevice.DeviceString     & $CRLF & _
   "DeviceID: "     & DisplayDevice.DeviceID         & $CRLF & _
   "DeviceKey: "    & DisplayDevice.DeviceKey        & $CRLF & _
   "StateFlags: "   & HEX$(DisplayDevice.StateFlags) & $CRLF
   IF (DisplayDevice.StateFlags AND %DISPLAY_DEVICE_ATTACHED_TO_DESKTOP) THEN
     Buffer = Buffer & "DISPLAY_DEVICE_ATTACHED_TO_DESKTOP" & $CRLF
   END IF
   IF (DisplayDevice.StateFlags AND %DISPLAY_DEVICE_PRIMARY_DEVICE) THEN
     Buffer = Buffer & "DISPLAY_DEVICE_PRIMARY_DEVICE" & $CRLF
   END IF
   IF (DisplayDevice.StateFlags AND %DISPLAY_DEVICE_MIRRORING_DRIVER) THEN
     Buffer = Buffer & "DISPLAY_DEVICE_MIRRORING_DRIVER" & $CRLF
   END IF
   IF (DisplayDevice.StateFlags AND %DISPLAY_DEVICE_MODESPRUNED) THEN
     Buffer = Buffer & "DISPLAY_DEVICE_MODESPRUNED" & $CRLF
   END IF
   IF (DisplayDevice.StateFlags AND %DISPLAY_DEVICE_REMOVABLE) THEN
     Buffer = Buffer & "DISPLAY_DEVICE_REMOVABLE" & $CRLF
   END IF
   IF (DisplayDevice.StateFlags AND %DISPLAY_DEVICE_VGA_COMPATIBLE) THEN
     Buffer = Buffer & "DISPLAY_DEVICE_VGA_COMPATIBLE" & $CRLF
   END IF
   Buffer = Buffer & $CRLF
 NEXT
 MSGBOX Buffer,, "EnumDisplayDevices on primary monitor"
 
END FUNCTION
'______________________________________________________________________________

[Pierre Bellisle]

Both previous program are updated
to react corectly even if second monitor
is made the main monitor via Windows monitor property options.

Pierre

[BOB MECHLER]

Thanks Pierre!

Bob Mechler